Test Methods And Techniques Stratigraphic Stratified Thermal Conductivity

During the humanity has been threatened by the energy crisis and environmental problems simultaneously, we urgently need to find an efficient, clean and renewable energy. Geothermal energy is such a high-energy, in addition it is also clean, large reserves, and easy mining and so on. Currently there are more means to use the geothermal energy. The main object of study in this article is a heat pump system. Heat pump system design and present a number of key indicators are empirical values, it is difficult to make the whole system truly effective, it must be to solve this problem in the early when the survey accurately test the thermal parameters of rock and soil, especially the thermal conductivity.Now more accepted means is the use of in-situ thermal response test instrument that can accurately test the average thermal conductivity of the formation of the original, but with an average thermal conductivity to be calculated and simulated or actual heat and there is a certain gap, this paper points layer of the thermal conductivity of the concept. The use of combined heat source model line interpolation method can accurately calculate the thermal conductivity of the formation of the stratified.Combined calculation method proposed in this paper that he developed a new type of in-situ thermal response test equipment. The instrument includes the circulatory system, heating system, data acquisition systems, and control systems. Then use stratified thermal conductivity of the proposed calculation method to analyze the data collected, and finally get stratified thermal conductivity of the formation.I use field data for analysis. First, the thermal conductivity of the stratified field measurement comparison with laboratory tests, I found that the difference is very small. Then using the measured thermal conductivity of heat transfer hierarchical simulation geothermal field will stabilize the simulated and actual monitoring to compare the geothermal field is also found little difference. At this point I think the calculation method and stratified thermal conductivity measurement instrument proposed is effective. Finally, stratified thermal conductivity calculated by calculating the actual heat transfer, found than the traditional method can be greatly improved, which means that according to the proposed method can greatly reduce the initial cost.The innovation of this paper is not only made use of stratified thermal conductivity can greatly improve the efficiency of ground source heat pump system, but also developed a set of novel in-situ thermal response test equipment to test stratified thermal conductivity, the real effective, intelligent and convenient, which not only improves the efficiency of the ground source heat pump system, will greatly reduce the initial cost of the system, as well as the promotion of the whole heat pump system geothermal energy has played a certain role.